Lexmark Optra S 1620 Manual

							Diagnostic Information2-54
4059-XXX
Configuration 2
A level I fuser board and level II engine board are installed in
configuration 2.
Note:Check the fuser envelope conditioner solenoid adjustment as
described in the adjustment section“Fuser Solenoid Adjustment” on
page 4-3.
FRU Action
1 Engine Board Jumpers Check to make sure a jumper is
installed between JP1-2 and JP1-3
and also between JP2-2 and JP2-3 on
theengineboard.
Note: If the jumpers are not in the
correct position on the engine board,
damage can result to the fuser board.
2 Fuser Envelope Conditioner
SolenoidThe operation of the fuser solenoid
can be observed by removing the
redrive assembly. Check for proper
mechanical operation of the solenoid
and associated hardware, link and so
on. If correct, check the resistance of
the solenoid between J4-1 and J4-2.
The resistance measures between 5
ohmsand10ohms.Iftheresistanceis
incorrect, replace the solenoid
assembly.
3 Fuser Control Board The solenoid receives power from the
fuser control board. The fuser control
board receives +42Vdc from the LVPS
via the interconnect board and
envelope conditioner cable. Check for
approximately +42 V dc at the
+42 V dc test point on the fuser control
board, If the voltage is incorrect,
replace the fuser control board. 
						

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4 LVPS Interconnect Board
Envelope Conditioner CableCheck the +42 V dc test point on the
fuser control board. If the voltage is
incorrect, check the continuity of the
envelope conditioner cable. If the
cable does not measure continuity,
replace the cable. If the cable
measures continuity, check the
voltage at J1-2 on the interconnect
board. The voltage measures
approximately +42 V dc. If incorrect,
check the voltage at CN3-18 on the
LVPS. It measures approximately
+42 V dc. If incorrect, replace the
LVPS.Ifcorrect,replacethe
interconnect board assembly.
5 Fuser DC Cable (Engine
board to Fuser Board cable)
Engine BoardCheck for continuity of the DC fuser
cable that is attached between J2 on
the engine board and J1 on the fuser
control board. If the cable does not
measure continuity, replace the cable.
If the cable measures continuity,
replace the engine board. FRU Action 
						

							Diagnostic Information2-56
4059-XXX
Configuration 3
A level II fuser board and level II engine board without the solenoid
cable is installed in configuration 3.
Note:Check the fuser envelope conditioner solenoid adjustment as
described in the adjustment section“Fuser Solenoid Adjustment” on
page 4-3.
FRU Action
1 Engine Board Jumpers Check to make sure a jumper is
installed between JP1-1 and JP1-2
and also between JP2-1 and JP2-2 on
theengineboard.
2 Fuser Envelope Conditioner
Solenoid Fuser Control
BoardThe operation of the fuser solenoid
can be observed by removing the
redrive assembly. Check for proper
mechanical operation of the solenoid
and associated hardware, link and so
on. If correct, disconnect the DC fuser
cablefromJ1onthefusercontrol
board and check the resistance of the
solenoid between J1-2 and J1-4 on
connector J1. The resistance
measures between 5 ohms and 10
ohms. If incorrect, disconnect the
solenoid from J4 and check the
resistance of the solenoid between
J4-1 and J4-2. If incorrect, replace the
solenoid assembly. If correct, replace
the fuser control board.
3 Fuser Cable Check the continuity of the fuser
cable. If the cable does not measure
continuity, replace the cable. 
						

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Input Sensor Service Check
Service Tip: Run the base sensor test. Check the input sensor for
proper operation. The display changes from open to closed as the
sensor flag is manually moved in and out of the sensor.
Service Tip: Run a Diagnostic Print Test in the continuous mode with
the controller board removed. A defective input sensor or circuit
causes the first copy to exit only partially through the fuser assembly.
4 Engine Board Check the +42 V dc test point on the
engine board. Go to“Engine Board”
on page 5-4in the locations section to
find the +42 V dc test point. Be careful
not to short between the test point and
any other pin. The voltage measures
approximately +42 V dc. If correct,
replace the engine board.
5 LVPS Interconnect Board Check the voltage at CN3-18 on the
LVPS. It measures approximately
+42 V dc. If incorrect, replace the
LVPS.Ifcorrect,replacethe
interconnect board.
FRU Action
1 Input Sensor Flag Check the input sensor flag for
damage and proper operation. If a
problem is found, repair as
necessary.
2 Engine Board Check for approximately +5 V dc at
J10-10 on the engine board. If
incorrect, replace the engine board.
3 Input Sensor Cable Check the continuity of the input
sensor cable. If incorrect, replace the
cable. If correct, replace the input
sensor assembly. FRU Action 
						

							Diagnostic Information2-58
4059-XXX
Input Tray(s) Option Service Check
250 Sheet, 500 Sheet and 500/500 Sheet Input Tray Option
Service Tip: Try all the other input paper sources to make sure they
are properly feeding paper.
For 990 Error Code- Service Tray X, X= displays the number of the
tray that has a problem or needs service.
FRU Action
1 Tray X option System Board
or Compensator Assembly
or Autoconnect CableCheck the autoconect cables and
connectors for any signs of damage.
Replace if necessary. Check the
cables for continuity. If incorrect,
replace the compensator assembly
cable. If the cables, connectors and
connections are good, replace the
FRUs in the following order:
autocompensator assembly option
system board 
						

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24X Paper Jam message displays, Paper jammed over the Pass
Thru Sensor. (The printer displays the value of X for the paper tray
where the error occurs. Example: 241 is a Paper Jam Tray 1)
FRU Action
1 Pass Thru Sensor and Flag
AssemblyThe tray x option system board did
not detect a piece of paper actuating
the pass thru sensor. Remove any
jammed sheets of paper from the
printer and check the pass thru
sensor and flag for proper operation
by running the appropriate Tray
Sensor Test from the diagnostics
menu. If the test fails, check the
sensor for correct installation and the
flag for proper operation. Also check
the sensor cable to make sure it is
correctly connected to the option
system board. If incorrect, replace
the tray x option pass thru sensor
assembly.
2 Power Takeoff Shaft and
Spring, Bevel Gear,
Feedroll Gear, Drive Roll
Assembly, Wear Plate,
Drive Shaft Bearings and
Skewed Backup RollerCheck these parts for signs of
broken or damaged parts,
contamination on the drive rollers or
wear plate and wear or damage to
the drive shaft bearings. Check the
drive roll assembly and skewed
backup roller for signs of wear, slick
spots, material buildup, and oil or
grease on the rollers. Also check for
proper operation of the paper
aligning assembly. Repair or replace
parts as necessary. 
						

							Diagnostic Information2-60
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Tray X Low message displays when Tray X is full or has adequate
paper in the tray.
Tray X Empty message displays when Tray X has paper in the tray.
FRU Action
1 Paper Low Sensor
Assembly
Paper Low Sensor Flag
Tr a y X O p t i o n S y s t e m
BoardRun the Tray X Sensor Test and
check the sensor for proper
operation. If incorrect, check the
following:
Paper low sensor flag for smooth
and correct operation.
Paper low sensor for correct
installation on the autocompensator
housing.
Paper low sensor cable for signs of
cuts, pinched wiring or other
damage especially at connector J5
on the system board.
If no problem is found, replace the
paper low sensor assembly. If this
does not correct the problem,
replace the option system board.
FRU Action
1 Paper Out Sensor Flag Check the paper out sensor flag for
correct operation and installation. If
correct, replace the option system
board. (The paper out sensor is
mounted on the system board). 2 Paper Out Sensor (On
Option System Board) 
						

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Printer does not recognize Tray X is installed.
Paper from Tray X does not reach the Pass Thru Sensor.
Service Tip: Check the media in tray x to make sure it is within
specifications. Some types of labels, foil material and slick papers
can cause misfeeds and slippage of the rollers.
High Capacity Feeder Input Tray Service Check
Note:Voltage measurements in the high capacity feeder input tray
service checks must be made with the high capacity feeder attached
to the base printer to obtain accurate results.
Service Tip: Be sure the paper size switch is set to the correct paper
size setting and the rear paper guides are in the correct locations for
the size of paper installed in the high capacity feeder tray.
Service Tip: Check the other paper sources to be sure they are
operating correctly.
FRU Action
1 Autoconect Cables
Tray X System BoardCheck the autoconnect from the
printer or option above tray x. Check
for signs of cuts, pinched wiring or
damage to the contacts in the
connector. Check the autoconnect
cable(s) for correct installation at the
trayxsystemboard.Ifcorrect,check
the continuity of the autoconnect
cable(s). If correct, replace the tray x
system board. If incorrect, replace
the cable.
FRU Action
1 Autocompensator
AssemblyCheck the autocompensator pick
arm rollers for any sign of glazing,
toner or other buildup. Clean or
replace as necessary. 
						

							Diagnostic Information2-62
4059-XXX
The base printer does not recognize that the high capacity input
tray is installed.
FRU Action
1 High Capacity Feeder
Autoconnect Mechanical
CheckCheck the high capacity feeder input
tray autoconnect to make sure it is
mounted correctly and is not pushed
down into the frame assembly or
damaged. Be sure the high capacity
feeder input tray autoconnect is
properly connected to the high
capacity feeder tray option board
assembly.
2 Base Printer or option
mounted aboveCheck the option or base printer
autoconnect for signs of damage.
Repair the high capacity option
autoconnect as necessary.
3 14 Pin HCIT Flex Cable Check the 14 pin flexible cable to be
sure it is installed correctly and
properly seated in the connectors on
both boards. Check the cable for
damage. Repair or replace as
necessary. 
						

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5 High Capacity Feeder
Option Control BoardCheck the voltage on J8-1 (green).
The voltage measures +24 V dc. If
incorrect, check the autoconnect
system for any problems. +24 V dc
must come from the base printer
through the autoconnect system to
the high capacity input for the high
capacity feeder to be recognized. If
the voltage is correct, check the
voltages at J11-3(red) and J11-
4(red). The voltages measure +24 V
dc. If correct, replace the high
capacity feeder option system board.
If incorrect, disconnect J8 from the
system board and measure the
voltages again. If incorrect, check
the LVPS cable and the A.C. internal
wiring from the input appliance
receptacle. If incorrect, replace as
necessary. If correct, replace the
LVPS. If the voltages are correct,
check the stepper motor for shorts
from the motor housing to each pin
on the motor connector. If you find a
short between any pin and the motor
housing, replace the motor
assembly. If no shorts are found,
replace the high capacity feeder
option control board.
Check the voltage at J9-1 (light
blue). The voltage measures
approximately +24 V dc. If incorrect,
disconnect the cable at J9 and check
the voltage again. If the voltage
continues to be incorrect, replace
the high capacity feeder option
system board. If the voltage
measures correctly, check the cable.
If the cable is damaged, replace as
necessary. If no problem is found
with the cable, replace the high
capacity feeder option control board. FRU Action